BLD: update submit_cache.py to to properly submit caches to iron.io
TST: nose.Skiptest on RemoteDataErrors in tests for io.data.Options

Added to release notes

Added to release notes

Fixed warning tests for RemoteDataError

TST: nose.Skiptest on RemoteDataErrors in tests for io.data.Options

Added to release notes

Conflicts:
	doc/source/release.rst
Merge pull request #7034 from dstephens99/OptionTests

TST: nose.SkipTest on RemoteDataErrors in tests for io.data.Options
BUG: unstack fails in PeriodIndex